PlainFlights

Route · BOS → IAH · 2020–2025 BTS data

Boston to Houston

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), BOS to IAH (Boston to Houston) ranks #1200 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

81.1%
On-time
+2.1 pts
vs US avg
68 min
Delay when late
9,747
Flights
#1200 of 4927
Corpus placement

Cancelled

1.3%

Best Month

Oct 2024 91%

Worst Month

Jul 2024 62%

Distance

1,597 mi

Carriers

10

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 175 39 0 0 B6,UA
Nov 2025 189 30 2 0 UA,B6
Oct 2025 190 32 0 0 B6,UA
Sep 2025 158 36 1 1 UA,B6
Aug 2025 197 34 2 2 UA,B6
Jul 2025 216 44 5 3 B6,UA
Jun 2025 196 55 2 4 B6,UA
May 2025 207 39 0 1 B6,UA,NK
Apr 2025 150 35 0 1 UA,B6
Mar 2025 150 27 0 0 B6,UA
Feb 2025 118 26 1 1 B6,UA
Jan 2025 113 42 4 0 B6,UA
Dec 2024 132 32 1 0 B6,UA
Nov 2024 139 18 0 0 UA,B6
Oct 2024 163 14 0 0 UA,NK,B6
Sep 2024 172 30 0 0 UA,B6,NK
Aug 2024 199 42 4 2 B6,NK,UA
Jul 2024 211 80 22 0 B6,NK,UA
Jun 2024 209 50 0 2 B6,NK,UA
May 2024 192 68 3 5 B6,NK,UA
Apr 2024 167 39 0 1 B6,NK,UA
Mar 2024 142 20 0 0 B6,UA
Feb 2024 127 11 0 0 B6,UA
Jan 2024 130 33 7 2 B6,UA

BOS–IAH seasonal on-time pattern

Best: November (85.9%) · weakest: July (74.3%)

70%75%80%85%90% JanFebMarAprMayJunJulAugSepOctNovDec 80.8%

Strongest calendar month

November

85.9% on-time · ~143 flights/mo

Busiest calendar month

July

~164 flights/mo avg

Weakest calendar month

July

74.3% on-time · ~164 flights/mo

Cancellation Rate

1.3%

54 of 4,042 flights

Diversion Rate

0.6%

25 of 4,042 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

BOS - Boston

Full on-time, delay-cause, and seasonal performance for Boston, MA.

BOS on-time profile

IAH - Houston

Full on-time, delay-cause, and seasonal performance for Houston, TX.

IAH on-time profile

Compare the two airports

See BOS and IAH side by side on delays, cancellations, and reliability.

Compare BOS vs IAH

Origin-hub reliability standing

Mid-pack among BOS departures

From BOS, this corridor sits with 49 other 75–85% on-time routes out of 60 tracked departures, not the hub's reliability leaders (6 at ≥85%) and not the softest ( 5 below 75%). Destination: Houston · fleet on-time rank #2680 of 4927.

What the Data Says About BOS to IAH

9,747 tracked flights put the BOS to IAH pairing (Boston to Houston) at a 81.1% on-time rate, squarely in line with the wider network. Delays that do occur run 68.4 minutes on average. Across the 1,597-mile route and its 10 carriers, the trailing 24 months show 1.3% cancelled and 0.6% diverted (4,042 flights sampled).

The monthly split is wide on this route: Oct 2024 posted the strongest performance at 91% on-time, while Jul 2024 came in at just 62% - a 29-point swing worth factoring into travel timing.

On the multi-year calendar, BOS–IAH peaks in November at 85.9% on-time while July carries the heaviest traffic (~164 flights per month) ; the softest month is July at 74.3%, a 11.6-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does BOS to IAH rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, BOS to IAH ranks #1200 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from BOS to IAH? ▼
Flights from Boston to Houston have a 81.1% on-time rate based on 9,747 flights. The average delay is 68.4 minutes. The best recent month was Oct 2024 with 91% on-time.
What is the cancellation rate for BOS to IAH? ▼
Over the last 24 months, 1.3% of flights on this route were cancelled (54 of 4,042 flights) and 0.6% were diverted.
How far is the flight from BOS to IAH? ▼
The flight distance from Boston (BOS) to Houston (IAH) is approximately 1,597 miles. This route is served by 10 carriers.
When is the best time to fly from BOS to IAH? ▼
The best recent month for on-time performance was Oct 2024 (91% on-time). The worst was Jul 2024 (62% on-time). Consider booking during months with historically better performance.

Airports on this route

BOS Airport

Boston
IAH Airport

Houston
Data source

Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.

Read our methodology - how this data is sourced, computed, and verified.

Using BOS–IAH data

BOS–IAH is mid-pack at 81.1% on-time; month and carrier mix move more than the corridor headline.

  • Compare BOS and IAH airport profiles: delay causes and top routes differ even on the same corridor. BOS airport
  • If your dates flex, November (85.9% on-time) beats July (74.3%) on this corridor. Seasonal chart
  • 4 other routes post a similar 81.1% on-time rate; compare before you commit to this pairing. Similar routes

On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.